4Collects Thanos Imperative #1-6, Ignition, & Devastation one-shots. Dark forces of a rival universe where there is no death are pouring through to claim ours! Nova, the Silver Surfer, and more of the greatest cosmic champions line up to stop them - but it could be more than even they can handle. Luckily, they have a plan. It's a crazy plan. It's called...Thanos!